Mine-ventilator



(No 00191. 2 sheets-slim 2'. H. DAVIES. MINE VENTILATOR.

No. 338.495. Patented Mar. 23, 1886.

INVENTOR MW. K M

WITNESSES jor UNITED STATES PATENT OFFICE.

HOVELL DAVIES, OF GOAL CREEK, TENNESSEE.

MINE-VENT! LATO R.

SPECIFICATION forming part of Letters Patent No. 338,495, dated March 23, 1886.

- Application filed April 17, 1884. Serial No. 129,297. (No model.)

To all whom it may concern:

Be it known that I, HOWELL DAVIES, a subject of the Queen of Great Britain, and residing at Goal Creek, in the county of Anderson and State of Tennessee, have invented certain new and useful Improvements in Mine-Ventilators, of which the following is a specification, reference being had therein to the accompanying drawings.

Figure 1 is a view of one side of my improved ventilator. Fig. 2 is a view of the opposite side. Fig. 3 isavertical section through the ventilator. Fig. 4 is a sectional detail showing the valves. Fig. 5 is a perspective with the parts broken away to show the interior structure of the device. Fig.6 is adetail in section to show the portion secured to the sides. Fig. 7 is a cross-section in detail taken in the plane indicated by dotted lines y y on Fig. 2.

This invention relates to machines which are especially designed for ventilating mines, but which may be employed for ventilating and cooling factories,ships,and for all purposes where ventilation is desired.

The nature of my invention consists, essen tially, in an oscillating drum which is provided internally with radial blades or wings and intermediate partitions, and also-with inlet and outlet valves, whereby the cubical contents of each chamber shall be discharged at the same time by each oscillatory movement of the cylinder, as will be fully understood from the following description, when taken in connection with the annexed drawings.

The drum A may be constructed entirely of metal, or it may be constructed with a movable sheet-metal cylinder, A, and stationary wooden heads or sides B B. Inside of this oscillating drum A is a central hub, G, from which extends the shaft 0, to which the drum is secured, and which is supported by journal-boxes in the heads or sides B B. The interior of the drum is divided into four compartments, E E E E, by means of radial blades F, which extend from the hub O to the cylinder A and from one stationary head or side, B, to the other, B, and which are the means of connecting the cylinder A to the hub G.

G G G G designate radial partitions, which may be made tapering-as shown, and which are rigidly secured to the heads or sides B B, consequently these partitions are stationary, while the cylinder and its blades are movable, and the latter are oscillated between them.

Through the stationary head B, I make radial slots H, arranged on opposite sides of each one of the partitions G and in close relation thereto. On the outside of the head B and over the said slots H, I apply oscillating valves or air-directors J, which have bearings on the beveled faces a a of the block b, so that they. can alternately close either one of each pair of the passages H, according to the direction in which the cylinder A is moving.

Through the stationary head B, I make radial slots or wind-passages K, and arrange them in pairs, like the slots H, through the head B. The outer side walls of the slots K are beveled outward, and the intermediate bridge of each pair of slots K lies on a stationary partition, G. Each pair of slots K is provided with an oscillating valve, k, partly covered by a grating or slotted cap, I, which is secured on the outside of the head B, and through which the air is drawn into the chamber when the cylinder A and its radial blades are oscillated. These slotted caps I have shouldered recesses 0 c, to receive and limit the movement of the valves during their rocking motions.

It will be seen from the above description that when the cylinder A and its blades or fans are oscillated, air will be drawn into the machine through the valve-passages in the head B and forcibly expelled through the valve-passages in the oppositehead, B. I thus have a combination of a ventilating-fan and an air-forcing engine which is exceedingly simple in its construction, not liable to derangement, and which will run without the bearings becoming heated.

Having described my invention,whatI claim asnew, and desire to secure by Letters Patent, is

In amine-ventilator, the combination of an oscillating cylinder, A, oscillating hub 0, blades F, connecting said parts, stationary heads B B, having radial partitions G, and In testimony whereofI affix my signature in radial slots H and K on opposite sides of and presence of two witnesses.

adjacent to said partitions, oscillating valves having beveled top and bottom bearings, and HOWELL DAVIES. 5 slotted caps secured to the outside of the head B, to partly cover the valves, and having \Vitnesses:

shouldered recesses to receive the valves, sub- WV. WV. DEW,

stantially as set forth. J. 0. LONG. 

